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Patterns of biological evolution (view source)
Revision as of 12:42, November 3, 2007
, 12:42, November 3, 2007Add image and brief explanation, and summary of creationist response.
Biological evolution is said to follow several different patterns over time. Factors such as environment and predation pressures are said to have different effects on the ways in which species exposed to them evolve. Evolutionary biologists have labeled these differing patterns as '''Divergent''', '''Convergent''' and '''Parallel''' Evolution.
Biological evolution is said to follow several different patterns over time. Factors such as environment and predation pressures are said to have different effects on the ways in which species exposed to them evolve. Evolutionary biologists have labeled these differing patterns as '''Divergent''', '''Convergent''' and '''Parallel''' Evolution.
Creationists point out that the evolutionary progressions has not been observed, and that these different developmental pathways are merely post-hoc explanations intended to accommodate observations to the [[theory of evolution]].
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[[image:Evolutionary trends.jpg]]
* Divergent evolution is when descendants of a species evolve separate traits.
* Parallel evolution is when two unrelated but similar species both develop similar traits.
* Convergent evolution is when to unrelated lineages become more alike by developing similar traits.
==Divergent Evolution ==
==Divergent Evolution ==